Very strange to me as all my goggling and stuff it says its not possible here in the US .. Talk about needing police people hours to use a email to track down a person .. Did this person know your full name? or partial address?
I dont doubt what you said but here in the US I just dont understand how my email address ( I have numerous ones) could be literally tracked to my door.
I once I had a crisis line through my Pdoc and T office They had caller ID "then" I can see them knowing it was "me" and where I live etc ..
Im sorry this confuses me

Maybe a tech savvy member will come along and explain how this happens..